diff --git a/pkgs/applications/networking/p2p/gnunet/default.nix b/pkgs/applications/networking/p2p/gnunet/default.nix
index 61ff16429783..c1ba42a5e6d3 100644
--- a/pkgs/applications/networking/p2p/gnunet/default.nix
+++ b/pkgs/applications/networking/p2p/gnunet/default.nix
@@ -1,7 +1,9 @@
 { lib, stdenv, fetchurl, adns, curl, gettext, gmp, gnutls, libextractor
 , libgcrypt, libgnurl, libidn, libmicrohttpd, libtool, libunistring
 , makeWrapper, ncurses, pkg-config, libxml2, sqlite, zlib
-, libpulseaudio, libopus, libogg, jansson, libsodium }:
+, libpulseaudio, libopus, libogg, jansson, libsodium
+
+, postgresqlSupport ? false, postgresql }:
 
 stdenv.mkDerivation rec {
   pname = "gnunet";
@@ -19,7 +21,7 @@ stdenv.mkDerivation rec {
     adns curl gmp gnutls libextractor libgcrypt libgnurl libidn
     libmicrohttpd libunistring libxml2 ncurses gettext libsodium
     sqlite zlib libpulseaudio libopus libogg jansson
-  ];
+  ] ++ lib.optional postgresqlSupport postgresql;
 
   preConfigure = ''
     # Brute force: since nix-worker chroots don't provide